Upright tubular steam-boiler



(No Model.) I

T. S. LA FRANCE. UPRIGHT TUBULAR STEAM BOILER.

Patented mvjzs, 1892.

INVENTOH A TTOHNEYS.

WITNESSES m: Noam: PETERS co.. PNQTC-LITHO. mswvmov, D c

' NiTED STATES ATENT Grimes.

TRUCKSON S. LA FRANCE, OF ELMIRA, NEl/V YORK.

UPRIGHT TUBULAR STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 487,124, dated November 29, 1892. Application filed June 10, 1892. Serial No. 436,208- (No model.)

To all whom it may concern:

Be it known that I, TRUCKSON S. LA FRANCE,

ofElmira, in the county of Ohemung and State of New York, have invented a new and 'useful Improvement in Upright Tubular Steam- Boilers, of which the following isa full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 of the drawings represents a vertical section of an upright tubular steamboiler embodying my invention; Fig. 2, an inverted plan of the same, and Fig. 3 a horizontal section taken upon the irregular line a: m in Fig. 1.

One of the objects of the invention is to keep the upright fire or smoke fines of the boiler mainly or wholly submerged in the feed-water of the boiler to better protect them without choking the steam-space of the boiler with water.

Another object of the invention is to improve the circulating and heating capacity of the boiler and to prevent injurious exposure of the bottom or crown sheet in case (f supply of feed-water to the upper water-space of the boiler being stopped or interfered with.

Other results are also secured by the invention which contribute to the general efficiency of the boiler.

The invention consists in certain novel constructions and combinations of parts, whereby said results are very perfectly secured, substantially as hereinafter described, and more specifically pointed out in the claims.

A indicates the outer shell of the upright tubular steam-boiler of cylindrical shape and constructed to form a water-jacket 1) below surrounding the fire-chamber B and with a perforated distributer c at top for the more equal supply of the steam from the steam space or chamber 0 of the boiler surrounding the smoke-fines d, indicating the steam supply or escape pipe.

D D are the upright smoke-fines connected as usual or in any suitable manner with and opening through the lower flue or crown-sheet c and upper flue-sheet f.

E indicates by dotted lines the smoke pipe or chimney, and F a distributer depending fronnthe crown-sheet e and serving to equalize the flame and gaseous products of combustion passing to the fiuesD D and to spread them, so as to act upon water circulating and heating legs G, connecting the water-jacket 1) below with the space immediately above the crown-sheet e. These water circulating and heating legs G are composed of or have combined with them a group of surrounding upright tubes g,fitted with circulating-tubes, as diaphragrns h, within them, to give greater heating capacity and more perfect circulation of the water.

Inclosing the smoke-fines D and extending up from the crown-sheet e to near the top of said fines, more or less, is an overflow-jacket H, which may be held in position at its proper distance from the flues by a ring-likev skirt 71, mounted on the crown-sheet and provided with perforations all around it. With this overflow or smoke flue submerging jacket H or with the perforated skirt 2', over which said jacket fits, the feed-water pipe Z to the boiler connects. This causes the water as it is fed to the boiler to pass within the jacket H and so as to protect the smoke-fines D by keeping them submerged for the greater portion of their height, and after rising up to or over the upper open end of said jacket the water overflows a nd passes down between the jacket H and an exterior circular duct or jacket I, secured to the upper flue-sheetfand extending downward, the same being open at its bottom to or nearly to the level the Water W should stand in the chamber 0. Thus the sinoke-fiuesDDarekeptsubmerged,ormainly so, without choking the steam-space of the boiler, and in case of any falling of the water below its proper level in the lower portion of the steam chamber C the crown-sheet 6 will still be kept flushed with Water circulating up the legs G and their group of tubes.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. An upright tubular steam-boiler having its upper water, smoke-flue, and steam space.

or part of the boiler adapted to keep the upright-smoke-flues mainly submerged from their bottoms upward by the feedvater of the boiler and whereby an overflow of the entering water is supplied to the lower porsteam-space of the boiler, inclosing theoverflow-jacket for a portion of its depth and open below for supplying the Water overflowing from the first-named jacket down to the lower portion of the outer steam-chamber of the boiler, substantially as specified.

TRUGKSON S. LA FRANCE.

Witnesses:

G. M. DIVEN, GEO. O. MILLER. 

